LED bulb



FIG. 1 is a front view of the LED bulb;

FIG. 2 is a rear view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a perspective view of the LED bulb. 

The ornamental design for an LED bulb, as shown and described. 